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JFreeChart – Free 100% Java Chart Library

JFreeChart is a free 100% Java chart library that makes it easy for developers to display professional quality charts in their applications.The JFreeChart project was founded seven years ago, in February 2000, by David Gilbert. Today, JFreeChart is used by approximately 40,000 to 50,000 developers. JFreeChart’s extensive feature set includes:

a consistent and well-documented API, supporting a wide range of chart types.

a flexible design that is easy to extend, and targets both server-side and client-side applications.